Adjustable shutter for enclosed heaters or the like



Aug. 17, 1937. 's. CHADWICK 2,090,107

ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE 6 Sheets-Sheet 1 3 4 4 a a 2 6 \U -7 I i 1 fa $2 |-||lk|| v 3 n F 5 m 3 m m n j 75 u 4 a v ta 6 f 2 K n L r J v 4 4 4 -T Li 1------ L- 7 6 o o e 9 J 2. O n r 8 4 H .2 3 Z Z Z W, 2 I a a w z INVENTOR. i. A low ATTORNEKX Aug.17 1937. 1.. s. CHADWICK ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original Filed June 13, 1934 6 Sheets-Sheet 2 INVENTOR.

ATTORNEY-7.

1937. L. s. CHADWICK 2,090,107

ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original Filed June 13, 1954 6 Sheetls-Sheet 3 2f 9 F 1 ff 25 E l Z5 i i [9 i 79 5 INVENTOR. o I

s 5 BY 1 A 10W ATTORNEYS Aug. 17, 1937. 1... s. CHADWICK.

ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original Filed .June 13, 1934 6 Sheets-Sheet 4 INVENTOR.

ATTORNEY). Y

Aug. 17, 1937. s. CHADWICK ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original Filed June 13, 1934 6 Sheets-Sheet 5 w I prmtk Egg;

INVENTOR.

ATTORNEYJ.

Aug. 17, 1937. 1.. s. CHADWICK ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original Filed June 13, 1934 6 Sheets-Sheet 6 Patented Aug. 17, 1937 UNITED STATES PATENT OFFICE ADJUSTABLE SHUTTER FOR ENCLOSED HEATERS OR THE LIKE Original application June 13, 1934,- Serial No. 730,370. Divided and this application August 30, 1935, Serial No. 38,593

4 Claims.

This is a division of my former application Serial No. 730,370, filed June 13, 1934, now Patent No. 2,041,226, patented May 19, 1936, relating to a heating stove comprising generally, a heat radiating unit, a casing enclosing the same and having openings in its walls, and a series of adjustable shutters pivoted in each opening.

The present case is restricted to the invention pertaining to the shutters and having as its principal objects the provision of a form of mounting for the shutters that facilitates their emplacement and insures easy and satisfactory operation; the provision of means for effecting simultaneous operation of all shutters of a series, and the provision of a very simple contrivance, pref- 'erably frictional, for holding said shutters in any position to which they are adjusted.

The foregoing objects, with others hereinafter appearing, are attainedin the embodiment of the invention illustrated in the accompanying drawings wherein Fig. 1 is a vertical section, from front to rear, through heating apparatus incorporating the invention; Fig. 2 is a sectional plan on the line 2--2 ofFig. 1, the same being on a scale somewhat larger than that of the preceding View; Fig. 3 is a vertical section, from front to rear, through the casing of the apparatus, on the same scale as Fig. 2 and showing the shutters in closed position; Figs. 4 and 5 are sectional details, on a further enlarged scale, taken, respectively, on the lines 4-4 and 55 of Fig. 2; Figs. 6 and '7 are views at right angles to each other of a retaining member for the pivots at one end of the shutters of a series; Fig. 8 is a plan view of such member on a scale considerably en-' larged over that of Figs. 6 and '7 Fig. 9 is a horizontal section through one of the front corners of the casing showing the pivotal mountings of adjacent front and side shutters; Figs. 10 and 11 are sections on the respective lines I 0-40 and IlII of Fig. 9; Fig. 12 is a detail, similar to Fig. 9, showing the pivot retaining member in an ineffective position as when the parts are being assembled, and Figs. 13,14 and 15 are details pertaining to the modification of the friction means for holding the shutters in any adjusted position.

The casing of the apparatus is made up of of angular forma-v connected to the lower ends of said posts and project down inside, and are secured to, the frame 2. A wall 6 occupies the space between the posts I at the rear of the casing and extends from top to bottom thereof. Gussets I are suit; ably secured to the tops of the cornerposts and" overlie adjacent parts of the panels 4 and 6, the outer edges of the gussets being flanged downwardly and projecting a material distance beyond the outer surfaces of the posts. A top l0 surmounts the casing and is supported by and suitably attached to the gussets l.

The lateral and front sides of the casing have openings defined by the corner posts I andthe top and bottom panels ,4 and 5, and within which opening is arranged a series of shutters II. For the purpose of the present disclosure, the parts of the structure on opposite sides of, or surrounding each of the aforesaid openings may be considered a frame. Therefore, where the term frame is used in the claims it is intended to cover opposed supports for the shutters whether or not they are connected above and/or below the'opening by cross members.

Each shutter II consists of a rectangular plate that is surrounded by a flange, and suitably secured to the end portion of the flange are pivot or bearing members I2. Said members, at one end of the shutters of each series (see Fig. 2), are engaged through bearing apertures in a straight inturned flange I3 of the adjacent corner post I, while those of the opposite end are accommodated by notches I4 in a substantially L-shaped flange I5 of the contiguous corner post I. As may best be seen from Figs. 9 to 12, the L-shaped flange I5 provides an inwardly facing channel downwardly through which may be projected a rod-like pivot retaining member or spring 16 (Figs. 6 to 8), having humps I'I spaced apart therealong. The top end of each member I6 is offset at I8, somewhat after the fashion of a crank, effecting a shoulder 20. It is evident from the corner post appearing in Figs. 1 and 3 that the laterally turned inner edge or channel portion of flange l5 terminates at its upper end about flush with the lower edge of the top panel 4 and at its lower end in the same relation to the upper edge of the bottom panel 5; and that the shoulder 20 of the retaining member I6 engages the upper end of said channel portion and serves as a stop to limit the downward movement of the pivot retaining member. It will also be apparent that the upwardly extending offset portion I8 of the retaining member isin a position to engage the gusset I .thereabove and by reason of this arrangement each retaining member is held against upward displacement.

In the installation of the shutters, the pivot or bearing members I2 at one end are projected through the bearing apertures in the. straight flanges [3 of one corner post and the shutters are then swung into place to engage the pivot or bearing members I2 at their opposite ends within according to the present embodiment, consists of a cylindrical drum that encloses adjacent its the notches M of the flanges I5, it being observed from Fig. 11 that the inner ends .of said notches are reduced in width to substantially the diameter of the pivot or bearing members. The pivot retaining member is next projected downwardly through the channel portion of the flange IS in the position shown in Fig. 12 and, by means of the offset upper end l8, the member-is turned to the position shown in Fig. 9; which causes the humps I! to be swung about within the channel and force the portions of the member I 6 between the humps into firm contact with the pivot or bearing members !2, the retainingmember being somewhat'deformed by this operation, as indicated in Fig. '11, wherefore it willbe retained under tension and thus constantly imposea pressure upon the pivot or bearing members in a direction to force them into the restricted ends of the slots I4. When the pivot retaining member is in'this position its ofiset end 13 is pressed against an adjacent part of the inner side of the post I, as illustrated in broken lines in Fig. 9.

Arms 25 (Figs. 4 and 5) extend from the corresponding ends of the shutters ll of each series,

and the inner ends of these arms are offset laterally, as best shown in Fig. 5. A link 26 connects'all arms of the shutters of a series, causing .said shutters to operate in unison and, excepting in the modification illustrated in Figs. 13 to 15 which will hereinafter be described, a tongue 21 is pivotally joined to the ,armof the lowest shutter, along with the lower'end of the link 26, said tongue being offset laterally intermediate its ends,

as shown at 28. The section of the tongue in the region of and including said oifset portion is guided within atubular member 29 that is secured, as by fastening means 30, to the flange I3 of the adjacent corner post. The tongue 21 is of resilient metal and, in the region of its offset portion 28, is somewhat compressed and thus placed under tension when forced into the tubular mem-' ber 29. By this arrangement a frictionalmeans is provided for holding the shutters, in any position to which they are adjusted, and the adjustment may be made by grasping a knob 3| on the .top shutter and swinging said shutter to the desired position, the others of the series assuming corresponding positions by reason ofjtheir connection with the top shutter through the arms 25 and link 26.

In the modification illustrated in Figs. 13, 14, and 15, the link 26 carries pivot members 21 shown as tubular and as having their inner ends internally threaded and their outer ends reduced and engaged through holes in the link 26 and peened over therebeyond. The pivotmembers 21 are journaled in the bearing apertures. of the arms 25 of, the shutters. vA bolt 28 isesecured through next to the top bearing member 21*, ac-

cording to the arrangement selected for, illustrative purposes, and a nut 29*, that is applied to its outer end, locks the bolt against unscrewing. A spring 30. iscompressedbetween washers 3l ,.one of which engages the head of the bolt and the other,,.the.arm'25.i.. By. means of this spring. suflicientfriction is. created between the arm 25 and the link 26 to hold the shutters in' I through openings in the top 10.

lower end a firepot 31, shown in dotted lines, and a combustion chamber 38 thereabovef A neck 39 opens through and projects upwardly from the front wall of the firepot and provides a lighting and cleanout opening normally closed by a plug; 40. ,The forwardend of the neck extends through an opening in the front bottom panel 5 adapted to be covered by a closure 4| that is removably held in place by any suitable means.

Fuel is delivered by gravity through a conduit 42 from a fuel reservoir 43, and the flow of oil to the firepot is adapted to be controlled by a metering valve 44', in the conduit 42, which valve is equipped'with an operating handle 45.

When the heat radiating unit or combustion device is in operationand the shutters II are open, heat will be radiated from the'heat radiatingunit or combustion device through the openings in the front and lateral sides of the casing,

and by inclining the shutters the heat rays may be deflected downwardly toward. the floor. I When the shutters are closed, air will enter the bottom of the casing and rise through the duct between the casing and the heat radiating unit and escape adjusting the diflerent series of shutters at different angles various eflects in heat distribution may be obtained.

Having thus described my invention, claim is: V Y

1. The combination of a frame having an opening, a series of shutters within said opening, means pivotally connecting the shutters to the frame alongone side of the opening, a flange what I extending along the opposite side of the'opening, the inner portion of said flange being turned laterally away from the opening and flanged along its edge to form a channel, said inner 7 portion of the flange having notches, pivots on the shutters j-ournaled in said notches and projecting across the channel, and an elongated, resilient pivot retaining member projected lengthwise through the channel and engaging said pivots undertension for holding the pivots within the notches. 2. The combination of a frame having an opening, a series of shutters within said opening,

means pivotally connecting the shutters to the frame along one side of the opening, a flange extending along the opposite side of the opening, the inner portion of said flange being turned laterally away from the opening and flanged along its edge to form a channel, said inner portion of the flange havingnotches, pivots on the shutters journaled in said notches and projecting across the channel, and an elongated resilient pivot retaining member projecting lengthwise through the channel, said member having .offset bearing portions at intervals throughout its length. which bear within a corner of the channel, and parts intermediate said bearing portions which engage the pivots and are placed under tension thereby for holding the pivots within the notches. 3'. The combination of a frame having an open- Obviously, by-

ing, a series of shutters within said opening, means pivotally connecting the shutters to the frame along one side of the opening, a flange extending along the opposite side of the opening, the inner portion of said flange being turned laterally away from the opening and flanged along its edge to form a channel, said inner por tion of the flange having notches, pivots on the shutters journaled in said notches and projecting across the channel, and an elongated resilient pivot retaining member projected lengthwise through the channel, said member having offset bearing portions at intervals throughout its length which bear within a corner between angularly related walls of the channel and having parts intermediate said bearing portions which engage the pivots and are placed under tension thereby for holding the pivots within the notches, the said notched inner portion of the flange stopping short of one end of the remaining portion of the flange and the pivot retaining member having a. crank-like offset providing a shoulder that extends over the end of said inner portion and by means of which crank-like offset the pivot retaining member may be rotated within the channel to position said member as aforesaid and place said intermediate parts under tension, the crank-like offset of said member being retained in the position it assumes, when the member is rotated in the manner set forth, by engagement with a part associated with the frame.

4. In a frame and shutter construction, the combination of a frame part having bearing apertures, a series of shutters, pivots on the shutters journaled in said apertures, and a resilient member common to all of said pivots, the same having widely spaced bearing portions that engage parts fixed with respect to the frame and portions intermediate thereof that engage the pivots under tension thereby to constantly press the pivots laterally against the sides of the apertures and thus prevent rattle and compensate for wear of the pivotal parts.

LEE S. CHADWICK. 

